update Snapmaker profiles

- add Breakaway Support filament
- add preheat params for Snapmaker Dual/IDEX printers
- update the check bounds code in start-gcode, which is now off by default

resources/profiles/Snapmaker/filament/Snapmaker J1 ABS @0.2 nozzle.json

@@ -8,9 +8,6 @@
   "compatible_printers": [
     "Snapmaker J1 (0.2 nozzle)"
   ],
-  "filament_end_gcode": [
-    ""
-  ],
   "hot_plate_temp": [
     "90"
   ],